3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $b = array(); $a['b'] = 'something'; $a['common'] = 123; $a['a1'] = array( 'common' => &$a['common'], 'elt1' => 11, 'elt2' => 12 ); $a['a2'] = array( 'common' => &$a['common'], 'elt1' => 21, 'elt2' => 22 ); $as = serialize($a); $a2 = unserialize($as); var_dump($a2['common']); var_dump($a2['a1']['common']); var_dump($a2['a2']['common']); var_dump($as); $a2['common'] = 456; var_dump($a2['a1']['common']); var_dump($a2['a2']['common']);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0110.00318.55
8.3.50.0140.00521.20
8.3.40.0070.00718.97
8.3.30.0110.01120.29
8.3.20.0040.00420.21
8.3.10.0060.00921.89
8.3.00.0040.00422.43
8.2.180.0000.01516.63
8.2.170.0130.00322.96
8.2.160.0070.01020.53
8.2.150.0090.00024.18
8.2.140.0080.00024.66
8.2.130.0100.00726.16
8.2.120.0060.00319.54
8.2.110.0040.00722.24
8.2.100.0070.00419.21
8.2.90.0030.00519.13
8.2.80.0030.00619.28
8.2.70.0030.00617.47
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0040.00418.34
8.2.30.0040.00418.08
8.2.20.0030.00517.69
8.2.10.0000.01017.56
8.2.00.0030.00617.61
8.1.280.0070.00725.92
8.1.270.0070.00024.66
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.79
8.1.230.0070.00419.16
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0120.00017.13
8.1.190.0000.00817.16
8.1.180.0070.00318.93
8.1.170.0040.00418.50
8.1.160.0040.00422.14
8.1.150.0070.00418.59
8.1.140.0040.00417.34
8.1.130.0040.00417.71
8.1.120.0000.00817.31
8.1.110.0000.00717.36
8.1.100.0070.00017.42
8.1.90.0040.00417.43
8.1.80.0000.00717.43
8.1.70.0070.00017.35
8.1.60.0000.00917.51
8.1.50.0050.00317.45
8.1.40.0030.00617.44
8.1.30.0030.00717.63
8.1.20.0030.00617.43
8.1.10.0000.00817.38
8.1.00.0000.00717.32
8.0.300.0040.00418.77
8.0.290.0070.00016.93
8.0.280.0080.00018.39
8.0.270.0070.00017.30
8.0.260.0030.00316.69
8.0.250.0030.00316.97
8.0.240.0000.00816.91
8.0.230.0000.00716.84
8.0.220.0030.00316.88
8.0.210.0000.00716.88
8.0.200.0040.00416.87
8.0.190.0030.00516.84
8.0.180.0000.00816.82
8.0.170.0000.00816.96
8.0.160.0030.00316.90
8.0.150.0000.00716.78
8.0.140.0000.00716.75
8.0.130.0060.00013.34
8.0.120.0000.00716.89
8.0.110.0000.00816.90
8.0.100.0000.00716.92
8.0.90.0070.00016.86
8.0.80.0100.01016.91
8.0.70.0000.00716.79
8.0.60.0000.00716.92
8.0.50.0000.00716.77
8.0.30.0140.00817.04
8.0.20.0080.01217.40
8.0.10.0040.00416.82
8.0.00.0130.00716.64
7.4.330.0000.00515.00
7.4.320.0060.00016.57
7.4.300.0030.00316.44
7.4.290.0070.00016.45
7.4.280.0040.00416.44
7.4.270.0000.00716.55
7.4.260.0070.00016.54
7.4.250.0050.00316.52
7.4.240.0020.00616.40
7.4.230.0030.00316.57
7.4.220.0140.01016.50
7.4.210.0060.00816.49
7.4.200.0050.00216.61
7.4.190.0000.00716.60
7.4.160.0090.00616.52
7.4.150.0120.00617.40
7.4.140.0090.00817.86
7.4.130.0120.00516.42
7.4.120.0080.00916.40
7.4.110.0070.01016.31
7.4.100.0000.01816.32
7.4.90.0060.01216.43
7.4.80.0030.01319.39
7.4.70.0060.01116.34
7.4.60.0140.00716.50
7.4.50.0030.00616.33
7.4.40.0110.00422.77
7.4.30.0100.00616.29
7.4.00.0090.00914.62
7.3.330.0030.00313.18
7.3.320.0000.00513.14
7.3.310.0030.00316.31
7.3.300.0070.00016.18
7.3.290.0070.00716.24
7.3.280.0120.00416.29
7.3.270.0080.00817.40
7.3.260.0150.00316.49
7.3.250.0270.01216.37
7.3.240.0120.00416.25
7.3.230.0180.00016.43
7.3.210.0090.00916.55
7.3.200.0180.00319.39
7.3.190.0120.00616.39
7.3.180.0090.00616.39
7.3.170.0110.00416.50
7.3.160.0130.00716.66
7.3.120.0090.00314.93
7.2.330.0120.00616.79
7.2.320.0130.00316.79
7.2.310.0100.00716.56
7.2.300.0070.01016.83
7.2.290.0110.01116.77
7.2.60.0080.00316.85
7.2.00.0090.00619.41
7.1.200.0030.00915.62
7.1.100.0060.00818.21
7.1.70.0000.00817.16
7.1.60.0030.01919.29
7.1.50.0060.00917.08
7.1.00.0030.03322.44
7.0.200.0130.00714.94
7.0.140.0070.07022.05
7.0.60.0070.08019.98
7.0.50.0000.04317.84
7.0.40.0100.08320.24
7.0.30.0300.07020.09
7.0.20.0230.06320.41
7.0.10.0300.05020.09
7.0.00.0130.08019.99
5.6.280.0030.07320.91
5.6.210.0130.08020.50
5.6.200.0070.07318.17
5.6.190.0030.08020.59
5.6.180.0270.06720.48
5.6.170.0230.07720.48
5.6.160.0070.05720.37
5.6.150.0030.04018.11
5.6.140.0030.08718.22
5.6.130.0070.08018.07
5.6.120.0030.05021.04
5.6.110.0130.07721.01
5.6.100.0100.05721.04
5.6.90.0030.07720.95
5.6.80.0070.07720.50
5.6.70.0170.06020.52
5.5.350.0100.08320.36
5.5.340.0070.03717.98
5.5.330.0100.04020.19
5.5.320.0300.04320.18
5.5.310.0100.04320.41
5.5.300.0000.08317.98
5.5.290.0170.07018.01
5.5.280.0030.04020.68
5.5.270.0030.06020.75
5.5.260.0070.08320.89
5.5.250.0030.08020.61
5.5.240.0030.08020.23
5.4.450.0730.06019.14
5.4.440.0900.04719.65
5.4.430.0830.05719.29
5.4.420.0700.06019.23
5.4.410.0230.05019.34
5.4.400.0330.06018.75
5.4.390.0270.05318.72
5.4.380.0330.04718.74
5.4.370.0130.05718.78
5.4.360.0170.05018.68
5.4.350.0050.04211.98
5.4.340.0100.04011.98
5.4.320.0050.04712.46
5.4.310.0100.04112.46
5.4.300.0090.04012.46
5.4.290.0070.04612.46
5.4.280.0080.03412.35
5.4.270.0110.03712.35
5.4.260.0100.04012.35
5.4.250.0200.04018.76
5.4.240.0100.05018.84
5.4.230.0070.05318.87
5.4.220.0070.05318.62
5.4.210.0070.05318.71
5.4.200.0170.04718.73
5.4.190.0170.04718.99
5.4.180.0030.05718.66
5.4.170.0070.05318.86
5.4.160.0030.05718.66
5.4.150.0200.07018.98
5.4.140.0100.05016.40
5.4.130.0030.05016.23
5.4.120.0000.06016.25
5.4.110.0130.07016.25
5.4.100.0170.05316.45
5.4.90.0070.05016.31
5.4.80.0070.07316.39
5.4.70.0100.04716.40
5.4.60.0130.04716.42
5.4.50.0170.06316.44
5.4.40.0170.04016.29
5.4.30.0030.06016.27
5.4.20.0100.07016.14
5.4.10.0070.05316.43
5.4.00.0030.05315.72
5.3.290.0070.04712.80
5.3.280.0130.04714.62
5.3.270.0070.05014.45
5.3.260.0070.05314.62
5.3.250.0070.08014.62
5.3.240.0100.05014.60
5.3.230.0030.05714.61
5.3.220.0070.05014.41
5.3.210.0100.05014.73
5.3.200.0170.04014.59
5.3.190.0130.06314.43
5.3.180.0130.04314.66
5.3.170.0130.04714.44
5.3.160.0000.06014.62
5.3.150.0130.04714.72
5.3.140.0030.05314.55
5.3.130.0030.05314.47
5.3.120.0100.07714.32
5.3.110.0000.06014.42
5.3.100.0030.06714.06
5.3.90.0100.05014.04
5.3.80.0000.06013.81
5.3.70.0070.05013.96
5.3.60.0100.04714.15
5.3.50.0100.04713.86
5.3.40.0030.05313.82
5.3.30.0000.05313.93
5.3.20.0000.05313.57
5.3.10.0030.05013.36
5.3.00.0130.04313.73
5.2.170.0030.04311.05
5.2.160.0070.04011.08
5.2.150.0100.03711.16
5.2.140.0100.05011.16
5.2.130.0100.03311.12
5.2.120.0000.04311.02
5.2.110.0100.05011.21
5.2.100.0070.03711.11
5.2.90.0030.04011.10
5.2.80.0100.03310.88
5.2.70.0070.04011.03
5.2.60.0070.04010.96
5.2.50.0070.03710.94
5.2.40.0000.04311.02
5.2.30.0070.03710.74
5.2.20.0070.03711.07
5.2.10.0070.05010.80
5.2.00.0070.04010.80
5.1.60.0030.0509.96
5.1.50.0070.0479.90
5.1.40.0030.03710.13
5.1.30.0130.03010.39
5.1.20.0100.03310.44
5.1.10.0030.0409.99
5.1.00.0000.04010.16
5.0.50.0000.0308.49
5.0.40.0070.0238.65
5.0.30.0030.0538.15
5.0.20.0030.0278.30
5.0.10.0030.0278.38
5.0.00.0030.0408.26
4.4.90.0000.0237.36
4.4.80.0000.0237.36
4.4.70.0070.0307.36
4.4.60.0000.0237.36
4.4.50.0030.0307.36
4.4.40.0030.0337.36
4.4.30.0070.0177.36
4.4.20.0030.0207.36
4.4.10.0030.0277.36
4.4.00.0100.0277.36
4.3.110.0030.0207.36
4.3.100.0130.0137.11
4.3.90.0000.0236.97
4.3.80.0070.0276.96
4.3.70.0070.0176.96
4.3.60.0000.0236.93
4.3.50.0030.0236.92
4.3.40.0030.0406.89
4.3.30.0000.0236.87
4.3.20.0000.0236.86
4.3.10.0000.0236.82
4.3.00.0000.0306.71

preferences:
41.56 ms | 401 KiB | 5 Q